Abstract:
There is a process for operating a utility boiler. The process has the following steps: a) continuously adding one or more slag control agents, one or more oxygen-generating agents, and a fuel oil to a furnace of the utility boiler; b) providing air to the furnace; c) burning the fuel oil to generate heat and an exhaust gas; d) periodically or continuously varying the dosage rates of the one or more slag control agents and/or the one or more oxygen-generating agents to maintain to substantially maintain one or more emissions variables in the exhaust gas within pre-determined limits. There is also a method for reducing emissions from a utility boiler and a method for reducing slag deposits within a utility boiler.
Abstract:
There is a process for operating a utility boiler. The process has the following steps: a) continuously adding one or more slag control agents, one or more oxygen-generating agents, and a fuel oil to a furnace of the utility boiler; b) providing air to the furnace; c) burning the fuel oil to generate heat and an exhaust gas; d) periodically or continuously varying the dosage rates of the one or more slag control agents and/or the one or more oxygen-generating agents to maintain to substantially maintain one or more emissions variables in the exhaust gas within pre-determined limits. There is also a method for reducing emissions from a utility boiler and a method for reducing slag deposits within a utility boiler.
Abstract:
There is provided a process for operating a coal-fired furnace to generate heat. The process has the steps of a) providing the coal to the furnace and b) combusting the coal in the presence of a first slag-reducing ingredient and a second slag-reducing ingredient in amounts effective to reduce slag formation in the furnace. In one embodiment, the first slag-reducing ingredient is one or more oxygenated magnesium compounds and the second slag-reducing ingredient is selected from the group consisting of one or more oxygenated calcium compounds, one or more oxygenated silicon compounds, and combinations thereof. In another embodiment, the first slag-reducing ingredient is one or more oxygenated silicon compounds, and wherein the second slag-reducing ingredient is one or more oxygenated aluminum compounds. There are also provided methods for reducing slag formation in a coal-fired furnace. There are also provided methods for treating coal. There are also treated coals.
Abstract:
There is provided a process for operating a coal-fired furnace to generate heat. The process has the steps of a) providing the coal to the furnace and b) combusting the coal in the presence of a first slag-reducing ingredient and a second slag-reducing ingredient in amounts effective to reduce slag formation in the furnace. In one embodiment, the first slag-reducing ingredient is one or more oxygenated magnesium compounds and the second slag-reducing ingredient is selected from the group consisting of one or more oxygenated calcium compounds, one or more oxygenated silicon compounds, and combinations thereof. In another embodiment, the first slag-reducing ingredient is one or more oxygenated silicon compounds, and wherein the second slag-reducing ingredient is one or more oxygenated aluminum compounds. There are also provided methods for reducing slag formation in a coal-fired furnace. There are also provided methods for treating coal. There are also treated coals.